Method of controlling a turbocharger
AssigneeFord Global Technologies, LLC
InventorsJon Dixon, Shawn Turek, Nicholas Parisi, Paul Michael Batten
Life of this patent
Estimating the term…
Abstract
Systems and methods are described for operating a turbocharger. A current exhaust manifold pressure is determined based on an engine operating condition. A current operating condition of the turbocharger is determined. A surge correction factor is determined based on the current operating condition of the turbocharger. The current exhaust manifold pressure is adjusted based on the surge correction factor.
Claims19
A method for operating a turbocharger the method comprising:
- determining, via a control unit comprising processing circuitry, an exhaust pressure setpoint based on an engine operating condition of an engine;
- determining, via the processing circuitry, a current and maximum operating boost pressure of the turbocharger;
- determining, via the processing circuitry, a surge correction factor based on the ratio of the maximum operating boost pressure and the current boost pressure;
- limiting, via the processing circuitry, the surge correction factor;
- and
- adjusting, via an actuator of the exhaust system, the exhaust pressure setpoint based on the limited surge correction factor.
A system for operating a turbocharger, the system comprising:
- an engine;
- an exhaust system comprising an actuator configured to control the flow of exhaust gases through the exhaust system;
- and
- a control unit communicatively coupled to the engine, the exhaust system, and the actuator, wherein the control unit comprising processing circuitry is configured to:
- determine an exhaust pressure setpoint based on an engine operating condition of an engine;
- determine a current and maximum operating boost pressure of the turbocharger;
- determine a surge correction factor based on the ratio of the maximum operating boost pressure and the current boost pressure;
- limit the surge correction factor;
- and
- adjust the exhaust pressure setpoint based on the limited surge correction factor.
A vehicle comprising a system for operating a turbocharger, the system further comprising:
- an engine;
- an exhaust system comprising an actuator configured to control the flow of exhaust gases through the exhaust system;
- and
- a control unit communicatively coupled to the engine, the exhaust system, and the actuator, wherein the control unit comprising processing circuitry is configured to:
- determine an exhaust pressure setpoint based on an engine operating condition of an engine;
- determine a current and maximum operating boost pressure of the turbocharger;
- determine a surge correction factor based on the ratio of the maximum operating boost pressure and the current boost pressure;
- limit the surge correction factor;
- adjust the exhaust pressure setpoint based on the limited surge correction factor.
Dependencies are inferred from the claim text.